story of a little girl caught between the parents who love her and the hospital trying to save her life. Sara herb burger is suffering. And her amish parents are refusing to continue the treatments. Alex perez has more on this life and death struggle. Reporter: This morning, this children's hospital in akron, ohio, is battling an amish family's decision to treat leukemia with natural remedies instead. Our belief is the natural stuff will do just as much as what that does, if it's god's will. Reporter: Though the amish shy away from modern technology, sarah hershberger's father agreed to an interview. After a month, the tumors shrunk. But the side effects became too much for her to handle. If we do chemotherapy and she would happen to die, she would probably suffer more than if we would do it this way. Reporter: In june, they stopped the treatment. With chemotherapy, her doctors say she has an 85% chance of survival. Without it, she could die within a year. The hospital took the family to court, seeking guardianship. The hospital attorney, lobbying to take over sarah's care says, I believe there can be no doubt that it is in her best interest to have chemotherapy and have a chance to live a full life. The state's interest in protecting the child's life is going to be considered compelling. At the end of the day, I think it's going to override the parents' rights. Reporter: For "good morning america," alex perez, abc news, chicago.

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